<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>列表标签之无序列表</title>
</head>
<body>
    <ul>
        <li>A</li>
        <li>B</li>
        <li>C</li>
        <li>D</li>
        <!-- 以你写的顺序显示，不会自动排序 -->
    </ul>
</body>
</html>